Apparatus for lasting with an adhesive



July 19, 1949- J. FossA APPARATUS FOR LASTINGWITH AN ADHESIVE 3 Sheets-Sheet 1 Filed Oct. 30, 1945 July 19, 1949- J. FossA APPARATUS FOR LASTING WITH AN ADHESIVE Filed Oct. 50, 1945 3 Shee'cs-Sheerl 2 www w/ w m 3 WEA?? 3 3 B 1V ,7 2 ,AM m y 0 43 3 w, w ya, w, my 7 /7 fnvenfor Joseph Foss@ July 19, 1949. J. FOSSA 2,476,290

APPARATUS FOR LASTING WITH AN ADHESIVE Filed 001'.. 30, 1945 5 Sheets-Sheet 5 l l l l ll7- l l Irwenfar ,70 L Josep/z Fossa Patented July 19, 1949 OEFICE APPARATUS FOR LASTING WITH AN ADHESIVE Joseph Fossa, Salem, Mass., assignor to United Shoe Machinery Corporation,

Flemington,

N. J., a corporation of New Jersey Application October 30, 1945, Serial No. 625,606

This invention relates to lasting machines and particularly to a novel apparatus for lasting with an adhesive. Although herein illustrated as embodied in a progressive lasting machine of the type disclosed and claimed in United States Letters Patent No. 2,411,827, granted November 26, 1946 upon my application, it is to be understood that the invention is of broader utility and not limited to use in a machine organization of the exact character exemplified in the mentioned patent.

In lasting with an adhesive, i. e., cement lasting, by machines of known types in which the lasting operation proceeds progressively along the edge of the shoe bottom, it is necessary, before the shoe is presented to the machine, to render the inside face of the lasting margin of the stock and/or adjacent portion of a shoe-bottom part adhesive by applying adhesive thereto in a liquid state and then permitting the adhesive to reach a so-called tacky condition in which it will stick and hold the lasting margin of the stock securely in lasted position. This conditioning of the adhesive requires a considerable period of time for the solvent, or other liquid constituent, to evaporate or dry out before the adhesive is in the proper tacky condition, during which interval the shoes being treated must remain on their lasts and in racks. This would result in materially lowering the daily production of shoes unless a large number of expensive lasts were utilized, in order to keep up a steady flow of production. It also frequently happens that this conditioning period is continued for too long'a time with the result that the adhesive must be reactivated, or otherwise reconditioned, all of which involves still further delay and expense. These conditions are particularly objectionable in the manufacture of the so-called "slip-in lasted shoes in connection with the progressive lasting of the platform covers, since it is desirablethat shoes of this type be produced with the utmost efficiency both from the standpoint of time and expense. Also, in the lasting of the platform covers of shoes of the type just mentioned, unless the adhesive is very carefully applied to both the shoe bottom part, i. e., the platform, and the lasting margin of the cover, the latter is likely to adhere, prematurely, to the edge of the platform and thus interfere with, and slow down, the subsequent cover-lasting operation. In connection with the foregoing reference to the progressive lasting of platform covers, it will be pertinent to state that, while strictly speaking, the tensioning of the margin of the cover and securing it to the platform is not lasting because the cover is not conformed to a last, this operation has, because of the similarity of the steps involved, come to be designated in the trade as cover lasting, Accordingly, and inasmuch as the machine of this invention is adapted to perform this cover-lasting operation as well as the lasting of conventional shoes, the terms lasting" and lasting margin are hereinafter used in a broader sense that usual and to include the treatment of platform covers. It has also been proposed to apply adhesive, during the lasting operation, in a liquid condition, and to hold the stock in lasted position by means of temporary fastenings, such, for example, as tacks or staples, which are later removed after the adhesive has set. This, of course, involves delay, as well as additional labor and expense.

It is, therefore, an object of this invention to provide a novel and improved apparatus for progressively lasting with an adhesive by the use of which the above-mentioned diiliculties and delays are avoided. To this end, there is embodied in the herein illustrated lasting machine; which has power-operated means for tensioning stock to be lasted, progressively in different locations along the edge of the shoe bottom, by drawing the lasting margin of the stock inwardly over a shoebottom part into lasted position, and means for pressing the lasting margin in each location against the shoe-bottom part; means positioned in advance of the pressing member and over which the lasting margin of the stock is drawn by the tensioning means for introducing, between the lasting margin and the shoe-bottom part, a thick band of viscous adhesive in such a condition that it will immediately, upon the application of pressure by said pressing means, bond the lasting margin securely to the shoe-bottom part in lasted position.

More specifically, the herein illustrated machine has an intermittently operated gripper for tensioning the stock, in different locations progressively along the edge of the shoe bottom, by drawing the lasting margin of the stock in each location inwardly over a shoe-bottom-engaging member and in a direction substantially parallel to the bottom of the shoe, together with a member having a hammer-like action for applying localized pressure to the lasting margin to press it against the shoe bottom and movable thereafter to feed the shoe. The means for introducing adhesive, in the construction herein shown, comprises a nozzle associated with the shoe-bottomengaging member and positioned in advance of the pressing and feeding means for extruding and applying along the margin oi the shoe-bottom part a band of thermoplastic adhesive in a heated l semi-liquid condition such that it will immediately, upon the application of pressure by said pressing and feeding means, bond the lasting margin securely to the -bottom of the shoe.

For thus extruding and applying thermosplastic adhesive in the condition mentioned, the herein illustrated machine is provided with a container for maintaining a body of thermoplastic adhesive in a heated, semi-liquid condition, and means, including a pump, for delivering the adhesive in this condition to the point of application to the work. Conveniently, in the herein illustrated machine, the container takes the form of an electrically heated pot from which the heated, semi-liquid adhesive is pumped through a passageway formed in the body of a shoe-bottom-engaging member of the machine and extruded through a discharge orifice, or orices, in the shoe-bottom-engaging face of this member. To facilitate removal of the adhesive, when desired, the container is pivotally mounted so that it can be inverted and the heated adhesive poured out. For insuring that the adhesive will be applied in exactly the proper condition, the shoe-bottom-engaging member, which serves as a nozzle through which the adhesive is extruded, is likewise provided with an electrical heater, and this heater, as well as the one associated with the pot, has adapted to maintain the desired temperatures at these points.

Preferably, and as herein illustrated, the pump is connected so as to be driven from the main drive shaft of the machine and hence runs conu tinuously, and valve means are provided for cutting oi the flow of adhesive, and by-passing the discharge of the pump back into the pot, when there is no work in the machine. Conveniently, this valve means is arranged to be controlled by the movement of the shoe-bottomengaging member to and from operative position so that the ow of adhesive is automatically started at the beginning of the lasting operation and cut off at its conclusion as a resultl of the depression and release of a treadle that is employed for shifting the shoe-bottoxn-engaging member.

The above and other objects and features of this invention, including various novel details of construction and combinations of parts, will appear from the following detailed description thereof, with reference to the accompanying drawings, and will be pointed out in the claims.

In the drawings,

Fig. 1 is a view in elevation of one side of a machine embodying features of this invention;

Fig. 2 is a view, on an enlarged scale, of the front portion of the opposite side of the machine shown in Fig. 1;

Fig. 3 is a plan view of a part of the machine;

Fig. 4 is a view in front elevation of the principal operating parts of the machine shown in Fig. 1; and

Fig. 5 is a view on an enlarged scale, of a part of the machine.

Referring to the drawings,` the machine therein illustrated, except for certain additional features to be described in detail below, is substantially like the machine disclosed in the above-mentioned patent and is provided with upper-tensioning means, comprising a rear gripper jaw |0 and a front gripper jaw l2, a combined shoebottom rest and lasting shield i4, a presser-feedioot I6, a feed-retaining finger I8 and an edgethermostatic controls u gage roll 20. These elements are mounted on, and operated by mechanism contained within, a hollow head construction 22 including a lower part 24 and an upper removable cover part 26. The rear gripper jaw is secured by a screw 30 to a carrier 32 that is mounted, on pivoted arms 34, 36, for reciprocating movement by means oi mechanism driven by a main drive shaft 52 and including an arm 46 and a link 66. The front gripper jaw is carried by a rod\|02 that is slidably mounted in bearings formed in portions |00 and no of the carrier a2 amigar its inner end, is in alinement with a similar rod |03 which is, at times, moved to the left, Fig. 1, by means, not shown, but operated by the main drive shaft 52, to hold the front gripper jaw away from the rear gripper jaw against the tension of a gripperclosing spring |50. The arrangement is the same as that in the machine of my above-mentioned patent and such that the gripper jaws will be closed, by the spring |50, as the rear jaw moves to the left, as viewed in Fig. 1 on the lasting margin of the stock to be lasted and will draw the lasting margin inwardly from the edge of a shoe held against the edge gage roll 20 and over the bottom rest |4 which, see Fig. 4, is provided with an extension |10 that serves as a lasting shield. As the rear gripper jaw returns, i. e., moves to the right as viewed in Fig. l, the rod |03 will be operated to hold the front gripper jaw from moving in this direction until the rear gripper jaw again starts to move to the left.

The presser-ieed-foot i6 is secured to the outer end of a lever 242 that is pivoted on an arm 244 which is arranged to be oscillated in time relation to the up and down movements of the presser-feed-foot, by mechanism not shown but the same as that in the machine of the abovementioned patent and driven from the shaft 52, in such a way that the tensioned and overdrawn lasting margin of the stock is pressed firmly against the bottom of the shoe and, while it is in pressing engagement with the lasting margin the presser-feed-foot is moved in a direction to feed the shoe, -to the left and to the position in which it is shown in Fig. 4. The feed-retaining finger l0 is mounted on the extreme outer end of a lever 234 that is moved up and down periodically and in time relation to the action of the presser-feed-foot I6, by mechanism not shown but the same as that in the mentioned application and including a spring 293, the arrangement being such that the feed-retaining finger I8 descends into engagement with the overlasted margin of the stock just as the feeding movement of the presser-feed-foot I6 has been completed, see Fig. 4, and remains in this position and in pressing engagement with the lasting margin while the presser foot is rising and returning.

As in the machine of the mentioned patent, the combined bottom rest and lasting shield is secured by screws |12 to an arm |14 that extends downwardly from a hub |16 which is pivoted on a shaft |18 mounted in a forwardly extending portion of the head part 26 and is arranged to be moved to operative position in which it is shown in Figs. 1, 2 and 4, by a treadle, not shown that is connected by a treadle rod 202 to an arm |08 associated with a hub |94, pivoted on the head part 26, and is swung outwardly to inoperative position by a spring 206 that extends between a pin 204 and another arm 200 on this hub, stop pins -208 and 2 It being provided for limiting movement of the arm 200 in either direction. A third arm |9| formed integrally with the hub |34 ls provided with a gear segment |82 which meshes with a pinion |80 fast on a shaft |88 having an eccentric portion |86 that is journaled in a blocs 84 which is embraced by a bifurcated end portion on a second arm |80 which extends from the hub |16 mentioned above.

The spring |50 isanchored on an arm |52 which is secured to a shaft |54, journaled in the head part 26 ,and on the outer end of this shaft is a spring-adjusting handle |56. Also extending from the hub |16, is an arm 2|2 that is connected, by a link 2N, to an arm 2|8 which is pivoted on the shaft |64 and has a lower portion provided with an extension 220 adapted, when the lasting shield is in its inoperative position, to bear against a collar 222 carried by the rod |02 and thus hold the front gripper jaw in its extreme foremost position.

The machine so far as has been described is substantially like that disclosed in the abovementioned patent to which reference may be had for a more detailed description of the various parts and their operating mechanisms, and tov simplify such reference similar parts have been identified with the same reference characters as were used in the prior application.

For the purpose oi' this invention, the herein illustrated machine is provided with means for applying a thick band of viscous adhesive between the lasting margin of the stock to be lasted and a shoe-bottom part, which are illustrated in Fig. 4 as being the lasting margin of the platform cover C and the platform P of a slip-lasted shoe shown on the last L; before the stock is pressed against the shoe-bottom part, in the following manner. The lasting shield portion E of the bottom rest I4 is formed on a separate part 300 which is removably secured to the body portion of the bottom rest by means oi a screw 302, see Figs. 2, 4 and 5. The part 300 has a longitudinally extending bore 304 one end of which is closed, by the screw 302, while the other end is connected to a bore 306 which extends upwardly through the body portion of the bottom rest to a spherical end 308. The bore 306 connects with a bore 3| 0 formed in a spout 312 that extends downwardly from a cap member 3|4 which is secured by means of screws 3I8 to the bottom of a cylindrical container 3|8. see Fig. 1. This container is secured, by means of a rearwardly extending ange 320 and screws 322, to a platform 324 that is pivotally mounted by studs 326 on a bracket 328 carried by posts 330 on the head casting part 28. 'Ihe lower end of the spout 3I2 is provided with a spherical recess 323, see Fig. 4, which receives the spherical end 308, mentioned above, and the ball-and-socket joint thus formed is held together by the weight of the container 3|8, platform 324 and other associated parts, and

also by the tension of a spring 334 which is stretched between pins 336 and 338 mounted in the spout 3|2 and body of the bottom rest I4, respectively. The center of this joint is in alinement with the axis of the shaft |18 so that movement of the bottom rest |4 to and from operative position, in the manner above explained, is permitted.

The container 3|8 is hollow to provide a space 340 for receiving adhesive and extending upwardly from a bottom wall 342 thereof is a postlike member 344. Located .within a recess 345 formed in the lower end of the member 344 is a gear pump comprising meshing pinions 346 and 348 mounted on shafts 350 and 352, respectively, that are Journaled in bearing bores in the postlike member 344. see Figs. 2 and 3. A bore 354. see Fig. 3, connects the intake side of this pump to the space 340 of the container while a vertical bore 358 forms a discharge passage for the pump. Slidably mounted in the bore 356 is a valve rod 350 having a conical lower end 362, a cylindrical portion 383 and an elongated attened side 364, see Figs. 1 and 2. When this rod is in the position shown in the drawings, the pump will take adhesive in from the space 340 in the container, through the bore 354, and will force it through the lower end oi the bore 358, bores 3|0, 306 and 304, to a discharge passage 310, in the form of an elongated narrow slot, which extends upwardly from the shoe-bottom-engaging surface of the bottom rest I4 to the bore 304 therein, see Figs. 1, 2, 4 and 5. For driving the pump the shaft 352 is extended upwardly and is splined to a. worm wheel 380 that is journaled in a cover 382 removably secured to the top of the container 3| 8 by screws 384. This cover supports a worm 386, meshing with a worm wheel 380, that is connected by a flexible shaft 338, contained within a casing 389, to a spiral gear 39| meshing with teeth 383 formed on the main drive shaft 52 of the machine, see Figs. 1 and 3.

By moving the rod 360 downwardly until its lower conical end 382 seats on the upper end of the bore 360, which is chamfered to form a valve seat, the discharge of the pump will be cut oi from this bore and hence from the discharge passage 310 in the bottom rest I4. At the same time, the ilattened side of this rod will come below the gears 346 and 348 of the gear pump so that the discharge of the pump will now be bypassed, up through the space between the flattened side 364 of the rod and the bore 356 and back into the space 340 of the container. For thus shifting this rod when the treadle is released and the bottom rest moved to inoperative position, a lever 330, pivoted at one end to the top of the container 3|8, see Fig. 1. is connected at a mid-point to the rod 360 and at its other end to the arm |9|, mentioned above, by a link 392. Thus, when the treadle, not shown, is released, the spring 206 will swing the arm |9| in a clockwise direction, as viewed in Fig. 2, thus moving the rod 360 down to the position mentioned and. at the same time, through the connections described above. the bottom rest will be swung outwardly, about the axis of shaft |18, in a clockwise direction, to its inoperative position.

For maintaining the adhesive within the container 3|8 in the desired semi-liquid condition and for insuring that the adhesive will be discharged through the passage 310 in exactly this same condition, an electrical heater 400 is secured to the bottom of the container 3|8 and anotherl heater 402 is associated with the body portion of the bottom rest |4. These heaters are each connected, by leads 404 and 486, to a source of .electrical energy, through a control box 408 tained within the box mounted on the head-casting part 24, see Fig. 1. This control box contains electrical controlling mechanisms of conventional type for each of the heaters, including regulating knobs 4|0 and 4|2, so that the temperatures in the container and at the bottom rest may each be independently and accurately controlled. As illustrated, the heater for the container 3|8 has a thermostat 4|4 (Fig. 3) that is connected to the control box by a capillary tube 4I8 and the knob 4|0 is arranged to regulate this thermostat. The knob 4|2 is connected to a rheostat of conventional type con- 408 and by turning this knob the temperature at the bottom rest may be regulated. If desired, a thermostat similar to the thermostat 4l4 may be provided for the heater 402 in the bottom rest.

In operatipg the illustrated machine a quantity of suitable adhesive is placed in the space 340 of the container 3I8 and the knobs 4I0, 4I2 of the control box are set so that the proper degree of heat is supplied to the container and the discharge end of the bottom rest I4. The adhesive used should be of such a character that, by the application of heat thereto, it can be brought to a viscous state in which it can be delivered by the pump to the discharge oriilce 310. through the relatively small bores 3I0, 306 and 004, and at the same time possess adhesive properties rendering it capable immediately, upon the application of pressure, of bonding the lasting margin of the stock securely to the shoe-bottom part in lasted position. One type of adhesive that satisfies these requirements is a thermoplastic adhesive, having a resinous base combined with plastlcizers, which by the application thereto of heat at a relatively low temperature, e. g., about 300 F., can be reduced to a semiliquid condition in which it can be readily handled by the gear pump and extruded out of the discharge orice 310, in the form of a thick band, into the space between the overdrawn margin of the stock and the shoe-bottom part. The exact length and width of the slot may, of course, be varied to suit diilerent conditions and instead of a slot a plurality of relatively closely spaced holes may be used for extruding the adhesive in the form of a plurality of closely spaced bands. Also, if desired, an additional orifice 430 may be provided for conducting some of the adhesive out of the inner end of the member 300 and onto the inside face of the stock. When applied in this condition, the thermoplastic adhesive of the type mentioned while not exactly sticky, or tacky, as this term is usually understood, will, upon the application of pressure, adhere to the lasting margin of the stock and the shoe-bottom member. Yet, at the same time, the adhesive in this condition has suiilcient strength, or set, that, upon the application of pressure, it will immediately, and without any time dwell for a temperature drop, hold the lasted margin securely in lasted position against the pull-back stress incidental to the lasting tension which has been previously applied.

With the container 3I8 lled with an adhesive of the type described above, after the machine has been started and the heaters 400 and 402` in operation for suillcient time to reduce the adhesive to the condition mentioned above, the work to be lasted is presented to the machine with the treadle released and the bottom rest in its inoperative position. The treadle is now depressed to swing the bottom rest into the operative position shown and, simultaneously the gripper jaws I and Il are rendered operative. by the rearward movement of the arm 2I6, to grip the lastingk margin and draw it inwardly from the edge of the shoe, which is held bottom up against the bottom rest and with its side face against the edge gage roll. The presserfeed-foot I6, which consists of a narrow bladelike element, now descends, with a hammer-like action, to press a narrow area of the overdrawn lasting margin, extending inwardly from the edge of the shoe bottom, rmly against the bottom of the shoe and thereafter moves in a direction to feed the shoe. At the conclusion of this feeding movement, thepresser-feed-foot rises and returns while the gripper jaws repeat their action on an adjacent portion of the stock, and,

during this interval, the feed-retaining linger 5 I8, which also consists of a narrow blade-like element that descends with a hammer-like action, holds the shoe against retrograde movement and applies additional pressure on the lasting margin. Preferably the operating faces of the presser-feed-foot I6 and feed-retaining finger are each formed with spaced projections, as are shown at 420 on the presser-feedfoot I0, in Fig. 5. The above actions of the lasting instrumentalities of the illustrated machine are the same as that of the machine described in the above-mentioned patent to which reference may be had for a more detailed description thereof. i

With the novel apparatus herein illustrated, however, neither the lasting margin nor the bottom of the shoe is coated with adhesive before the shoe is presented to the machine, since movement of the bottom rest I4 to its operative position also lifts the valve rod 360 with the result that, immediately upon the beginning of the lasting operation, a thick band of viscous cement, in the adhesive condition already mentioned, is extruded through the orice 310 and applied along the margin of the shoe-bottom part, directly below the overdrawn lasting margin, just before the presser-feed-foot I6 is operated to press the lasting margin against the bottom of the shoe. As has been already explained, the heaters 400 and 402 maintain this adhesive in such a condition that upon the application of pressure by the pressure-feed-foot it will immediately bond the lasting margin securely to the bottom of the shoe in lasted position. As the lasting operation proceeds. so that the lasting margin is ovedrawn and pressed against the shoe-bottom part, progressively in different locations along the edge of the shoe bottom, a continuous band of viscous adhesive is spread on the shoe-bottom part and upon the application of pressure to the lasting margin in each of these locations the lasting margin is adhesively secured to the shoe-bottom part in lasted position. This effect is enhanced by the hammer-like actions of the presser-feed-foot I6 and feed-retaining finger I8 on the narrow areas oi' the lasting margin which tend to drive the adhesive into the lasting margin and shoe-bottom part. Also the projections on these members facilitate adherence by applying pressure to the stock which is localized at a series of points extending inwardly from the edge of the shoe bottom.

The illustrated machine operates at a very rapid rate, a complete cycle of operations o! the 50 gripper jaws, presser-feed-foot and feed-retaining finger being completed about twenty times each second, as explained in my above-mentioned patent, so that pressure is applied but momentarily to the lasting margin in each location be- 65 fore the shoe is fed along to present a different portion of the stock for the lasting operation.

Hence there is no appreciable time dwell during which pressure is applied and no chance for any temperature drop to occur. However, with the 70 adhesive applied in the condition described, the

lasting margin is bonded securely to the shoebottom part in lasted position in each of the locations as the lasting operation proceeds.

At the conclusion of the lasting operation when 75 the treadle is released to stop the action o! the auaaoo gripper Jaws and to move the bottom rest to its inoperative position, thus permitting the removal of the shoe from the machine, the valve rod 36|!- is immediately lowered to its cut-01T and by-pass position so that delivery of adhesive by the pump to the bores 3H), 306 and 304 and passages 310 is immediately terminated and, since the condition of the adhesive is such as to preclude flow by gravity, no dhesive is wasted or likely to get on the ,outsid/ of the shoe.

//Should it be desired for any reason to change the adhesiv the cover 382 may be taken off, by removin screws 384. link 392 disconnected, and the spring 334 taken off from one of the pins 336 or 338, thus making it possible to invert the container 3|8, by swinging the platform 326 about the pivotal connection provided by the studs 326, and pour out the adhesive. The invention thus not only provides a machine for performing a lasting operation on shoes of the type herein shown at a very rapid rate which is a highly desirable and necessary feature for successful commercial use, but the lasting operation is performed successfully for the first time by the use of an adhesive applied during the lasting operation without sacrificing the speed of operation of the machine and without the use of additional fastening means.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted progressively in different locations along the edge of the shoe bottom by drawing the lasting margin of the stock inwardly over a shoe-bottom part, and means for pressing the lasting margin in each location against the shoe-bottom part, of means positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the tensioning means for introducing, between the lasting margin and the shoe-bottom part, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said member, bond the lasting margin securely to the shoe-bottom part in lasted position.

2. In a machine for lasting with an adhesive,

the combination with power-operated means for tensioning stock to be lasted in different locations progressively along the edge of the shoe bottom by drawing the lasting margin of the stock in each location inwardly over a shoe-bottom part, and means for pressing thel overdrawn lasting margin in each location against the shoe-bottom part, of means, including a nozzle positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the tensioning means, for extruding and applying along the margin of the shoe-bottom part, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a heated semiliquid condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin seurely to the shoe-bottom part in lasted position.

3. In a'machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted progressively in different locations along the edge of the shoe bottom by drawing the lasting margin of the stock inwardly over a shoe-bottom part, and means for pressing narrow areas of the lasting margin, extending inwardly from the edge of the shoe bottom, in each location against the shoe-bottom part, of means positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the tensioning means for introducing, between the lasting margin and the shoe-bottom part, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said pressing means. bond the overdrawn lasting margin securely to the shoe-bottom part in lasted position.

4. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning the stock to be lasted in different locations progressively along the edge of the shoe bottom by drawing the lasting margin of the stock in each location inwardly over a shoe-bottom part, and means for pressing narrow areas of the lasting margin, extending inwardly from the edge of the shoe bottom, in each location against the shoe-bottom part, of means, including a nozzle positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the tensioning means, for extruding and applying along the margin of the shoe-bottom part, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a heated, semi-liquid condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin to the shoe-bottom part in lasted position.

5. In a machine for lasting with an adhesive, the combination with power-operated means for working the lasting margin of stock inwardly over a shoe-bottom part into lasted position, progressively in different locations along the edge of the shoe bottom, including a member movable toward the shoe-bottom part and provided with proiections for applying localized pressure to the lasting margin in each location at a series of points extending inwardly from the edge of the shoe bottom, of means, positioned in advance of said pressing member for introducing, between the lasting margin and the shoebottom part, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin securely to the shoe-bottom part in lasted position.

6. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning the stock to be lasted in different locations progressively along the edge of the shoe bottom and for drawing the lasting margin of the stock in each location inwardly over a shoebottom part, and a member movable toward the shoe bottom and provided with projections for applying localized pressure to the lasting margin in each location at a series of points extending inwardly from the edge of the shoe bottom, of means including a nozzle positioned in advance of said pressing member, for extruding and applying along the margin of the shoe-bottom part, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a'heated semiliquid condition such that it will immediately,

upon the application of pressure by said pressing member, bond the overdrawn lasting margin to the shoe-bottom part in lasted position.

7. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted progressively in different locations along the edge of the shoe bottom by drawing the lasting margin of the stock inwardly over a shoe-bottom part, and means having a hammer-like action for pressing the lasting margin in each location against the shoebottom part, of means positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the-tensioning means for introducing, between the lasting margin and the shoe-bottom part, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said pressing means, bond the lasting margin securely to the shoe-bottom part in lasted position.

8. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning the stock to be lasted in diil'erent locations progressively along the edge of the shoe bottom by drawing the lasting margin of the stock in each location inwardly over a shoebottom part, and a member having a hammerlike action for pressing the overdrawn lasting margin in each location against the shoe-bottom part, of means, including a nozzle positioned in advance of said pressing member and over which the lasting margin of 'the stock is drawn by the tensioning means, for extruding and applying along the margin of the shoe-bottom part, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a heated, semiliquid condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin securely to the shoe-bottom part in lasted position.

9. In a machine for lasting with an adhesive, the combination with power-operated means for working the lasting margin of stock inwardly over a shoe-bottom part in lasted position, progressively in different locations along the edge of the shoe bottom, including a member operating in time relation to said power-operated means for pressing the lasting margin in each of said locations against the shoe-bottom part and movable thereafter in a direction to feed the shoe, of means, including a nozzle positioned in advance of said pressing and feeding means, for introducing, between the lasting margin and the shoe-bottom part, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said pressing and feeding means, bond the: lasting margin securely to the shoe-bottom part in lasted position.

10. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning the stock to be lasted, in different locations progressively along the edge of the shoe bottom, and for drawing the lasting margin of the stock in each of said locations inwardly over a shoe-bottom part, and means operating in time relation to said power-operated means for pressing the overdrawn lasting margin in each location against the shoe-bottom part and movable thereafter in a direction to feed the shoe, of means, including a nozzle positioned in advance of said pressing and feeding means, for extruding and applying along the margin of the shoe-bottom part, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a heated, semi-liquid condition such that it will immediately, upon the application of pressure by said pressing and feeding means, bond the overdrawn lasting margin securely to the shoe-bottom part in lasted position.

l1. In a machine for lasting with an adhesive, the combination with a member for engaging the bottom of a shoe adjacent to the edge thereof,

means for tensioning stock to be lasted, in different locations progressively along the edge oi the shoe bottom, by drawing the lasting margin of the stock in each location in over the shoebottom-engaging member and in a direction substantially parallel to the bottom of the shoe, and means operating in time relation to said tensioning means for pressing the overdrawn lasting margin in each of said locations against the bottom of the shoe, of means, including a nozzle associated with said shoe-bottom-engaging member, for introducing, between the overdrawn lasting margin and the bottom of the shoe, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin securely to the bottom of the shoe in lasted position.

12. In a machine for lasting with an adhesive, the combination with a member for engaging the bottom of a shoe adjacent to the edge thereof, means for tensioning the stock to be lasted, in different locations progressively along the edge of the shoe bottom, by drawing the lasting margin of the stock in each location in over the shoe-bottom-engaging member and in a direction substantially parallel to the bottom of the shoe, and means operating in time relation to said tensioning means for pressing the overdrawn lasting margin in each of said locations against the bottom of the shoe, of means, including a nozzle associated with said shoe-bottom-engaging member, for extruding and applying to the bottom of the shoe, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a heated, semi-liquid condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin securely to the bottom of the shoe in lasted position.

13. In a machine for lasting with an adhesive, the combination with a member for engaging the bottom of a shoe adjacent to the edge thereof, an intermittently operating gripper for tension- V ing the stock to be lasted, in different locations progressively along the edge of the shoe bottom, by drawing the lasting margin of the stock in each location in over the shoe-bottom-engaging member and in a direction substantially parallel to the bottom of the shoe, and means operating in time relation to said gripper for pressing the overdrawn lasting margin in each location against the bottom of the shoe, said gripper and said pressing means operating at a rapid rate and substantially twenty times a second, of means including a nozzle associated with said shoe-bottom-engaging member, for introducing, between the overdrawn lasting margin and the bottom of the shoe, a thick band of viscous adhesive in a condition such that it will immediately, upon the application of pressure by said pressing means, bond the overdrawn lasting margin securely to the bottom of the shoe in lasted position.

14. In a machine for lasting with an adhesive, the combination with a member for engaging the bottom of a shoe adjacent to the edge thereof, an intermittently operating gripper for tensioning the stock to be lasted, in different locations progressively along the edge of the shoe bottom, by drawing the lasting margin of the stock in each location in over the shoe-bottomengaging member and in a direction substantially parallel to the bottom of the shoe, and means operating in time relation to said gripper for pressing the overdrawn lasting margin in each gripper and said pressing means operating at a rapid rate and substantially ltwenty times a second, of means, including a nozzle associated with said shoe-bottom-engaging member. for extruding and applying to the bottom of the shoe, directly below the overdrawn lasting margin, a band of thermoplastic adhesive in a heated, semiliquid condition such that it will immediately, upon, the application of pressure by said pressing means, bond the overdrawn lasting margin securely to the bottom o! the shoe in lasted position.

15. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning the lasting margin of stock inwardly over the bottom face of a shoe-bottom part, of a pair of members spaced lengthwise of the shoe along the edge of said shoe-bottom part, one of said members being arranged for extruding a thick band of viscous adhesive along the margin o f said bottom face and the other said member being arranged for pressing the tensioned porthe combination with power-operated means for tensioning the lasting margin of stock inwardly over the bottom face of the shoe-bottom part, of a pair of members spaced lengthwise of the shoe along the edge of said shoe-bottom part, one of said members being arranged for extruding a band of thermoplastic adhesive in a heated semi-liquid condition along the margin of said bottom face and the other said member being arranged for pressing the tensioned portion of said lasting margin immediately against said band of adhesive at the end of the tensioning operation, said members being relatively movable to feed the shoe past said tensioning means.

17. In a machine for lasting with an adhesive, the combination with a reservoir for adhesive and a nozzle for spreading a thick band of viscous thermoplastic adhesive along the margin of a shoe-bottom part, of power-operated means for tensioning stock to be lasted by drawing its lasting margin inwardly, in a direction substantially parallel to the bottom of the shoe, over a portion of said shoe-bottom part to which the band of adhesive has been applied, and means movable toward the shoe bottom for pressing said overdrawn margin immediately against said band of adhesive at the end of the tensioning operation.

18. In a machine for lasting with an adhesive, the combination with a reservoir for adhesive and a nozzle for spreading a thick band of viscous thermoplastic adhesive along the margin of a shoe-bottom part, of power-operated means for drawing the lasting margin of stock inwardly over a portion of said shoe-bottom part to which the band of adhesive has been applied, and means movable toward the shoe bottom for pressing said overdrawn margin immediately against said band of adhesive at the end of the tensioning operation, said pressing means being also movable in a direction to feed the shoe past said poweroperated means and said nozzle.

19. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted progressively in different locations along the edge of the shoe bottom by drawing the lasting margin of the stock inwardly over a shoe-bottom part, and means for pressing the lasting margin in each location against the shoe-bottom part, of a nozzle positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the tension means constructed and arranged to extrude and apply a band of viscous. thermoplastic adhesive along the margin of the shoe bottom, and heating means in advance of said nozzle for rendering the adhesive plastic, the arv rangement being such that immediately upon application. of pressure by said pressure-applying member the margin ofthe stock will adhere to the shoe-bottom part.

20. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted in different locations progressively along the edge of a shoe bottom by drawing the lasting margin ofthe stock in each location inwardly over a shoe-bottom part, including means for pressing the overdrawn lasting margin in each location against the shoebottom part, of a nozzle positioned in advance of said pressing means and over which the lasting margin of the stock is drawn by the tensioning means constructed and arranged to extrude and apply a band of viscous, thermoplastic adhesive along the margin of the shoe bottom, and heating means in advance of said nozzle for rendering the adhesive plastic, the arrangement being such that immediately upon application of pressure by said pressing means the margin of the stock will adhere to the shoe-bottom member.

21. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted progressively in different locations along the edge of the shoe bottom by drawing the lasting margin of the stock inwardly over a shoe-bottom part, and means for pressing the lasting margin in each location against the shoe-bottom part, of means for applying thermoplastic adhesive in a heated semiliquid condition comprising a shoe-bottom-engaging member over which the lasting margin of the stock is drawn by the tensioning means provided with a discharge orifice, a container for adhesive, a pump for delivering adhesive `from said container to said shoe-bottom-engaging member and extruding it through said orifice, and means for heating said container and said shoe-bottom-engaging member.

22. In a machine for lasting with an adhesive, the combination with power-operated means for tensioning stock to be lasted in different locations progressively along the edge of a shoe bottom by drawing the lasting margin of the stock in each location inwardly over a shoe-bottom` part. and means for pressing the overdrawn lasting margin in each location against the shoe-bottom part, of means for applying thermoplastic adhesive in a heated semi-liquid condition comprising a shoebottom-engaging member over which the lasting margin of the stock is drawn by the tensioning means provided with a discharge orifice, a container for adhesive, a pump for delivering adhesive from said container to said shoe-bottomengaging member and extruding it through said orifice, and electric means for heating said container and said shoe-bottom-engaging member.

23. In a shoe machine, the combination with means for operating on a shoe, of means for applying adhesive during said operation comprising a container for adhesive, a member for applying adhesive to a part of the shoe, a pump for delivering adhesive from said container to said member, a Valve for controlling the output of said armeno pump adapted, in one position. to direct the entire output to said member, and, in another position,

-to cut of! delivery of adhesive to said member and direct the output of said pump back to said container, and means for shitting said valve to said positions selectively.

24. In a shoe machine, the combination with means for operating on a shoe, of means for applying a heated, thermoplastic adhesive in a semi-liquid condition during said operation comprising a container for adhesive, a member for applying the heated adhesive to a part of the shoe, a pump for delivering adhesive from said container to said member, a valve for controlling the output of said pump adapted, in one position, to direct the entire output to said member and, in another position, to cut off delivery of adhesive to said member and direct the output of said pump back to said container, and means for shifting said valve to said positions selectively.

25. In a machine for lasting with an adhesive, the combination with lasting instrumentalities, of means for applying adhesive during the operation of said instrumentalities comprising a container for adhesive, a member for applying adhesive to a part of the shoe, a pump for delivering adhesive from said container to said member, a valve for controlling the entire output of said pump adapted, in one position, to direct the output to said member, and in another position, to cut off delivery of adhesive to said member and direct the output of said pump back to said container, and means for shifting said valve to said positions selectively.

26. In a machine for lasting with an adhesive, the combination with lasting instrumentalities, of means for applying a. heated thermoplastic adhesive in a semi-liquid condition during the operation of said nstrumentalities comprising a heated container for adhesive, a member for applying the heated adhesive to a part of the shoe, a pump for delivering adhesive from said container to said member, a valve for controlling the entire output of said pump adapted, in one position, to direct the output to said member, and in another position, to cut ofl.' delivery of adhesive to said member and direct the output of the pump back to said container, and means for shifting said valve to said positions selectively.

27. In a machine for lasting with an adhesive, the combination with power operated lasting instrumentalities and operator-controlled means for rendering said instrumentalities operative or inoperative selectively, of means for applying adhesive during the operation of said instrumentalities including a. nozzle movable to and from operative position on the bottom of a shoe by said operator-controlled means.

28. In a machine for lasting with an adhesive, the combination with power operated lasting instrumentalities and operator-controlled means for rendering said instrumentalities operative or inoperative selectively, of means for applying adhesive during the operation of said instrumentalities including a nozzle movable to and from operative position on the bottom of a shoe by said operator-controlled means, a valve for controlling the action of said adhesive-applying means, and means associated with said operator-controlled means for operating said valve.

JOSEPH FOSSA.

REFERENCES CITED The following references are of record in the ille of Vthis patent:

UNITED STATES PATENTS 

